Help Creating Coordinates Based Movement for Dungeon Crawler

I was unable to find any information for movement in turn-based first person dungeon crawler so will be asking here.

I want to recreate this movement system for a turn-based dungeon crawler with blueprints but I don’t know how to, I have difficultly explaining but I want to have the player character move one square on the grid by pressing the button for either up, down, left or right.

The information I found so far wasn’t suitable for I want to make so I hope someone here can assist me so I am able to make this, sorry if my english isn’t very good.

I reposting because original wasn’t written properly giving bad impression.

A screenshot for reference.